Text Diff Checker

Professional text comparison tool for developers and writers. Compare texts side by side, highlight differences, and analyze changes with advanced comparison options.

Comparison Settings

Configure how texts should be compared

Comparison Options

Ignore Whitespace

Ignore Case

Ignore Punctuation

Show Line Numbers

Context Lines:

Original Text

Modified Text

Key Features

Side-by-side text comparison with highlighting

Advanced options: ignore case, whitespace, punctuation

File upload and drag-and-drop support

Statistical analysis of changes

Export diff results as text file

Understanding Text Diff

Line-by-Line Comparison: Our algorithm compares texts line by line using LCS method

Color Coding: Green for additions, red for deletions, white for unchanged

Normalization: Options to ignore formatting differences for better comparison

Statistics: Track additions, deletions, and modifications count

Tips & Best Practices

Code Review: Use "Ignore Whitespace" to focus on logical changes

Content Editing: Enable "Ignore Case" for proofreading tasks

Quick Upload: Drag files directly into text areas for instant comparison

Version Control: Compare different versions of documents or code

Performance: Large files (>1MB) may slow down comparison

Privacy: All processing happens locally in your browser

How to Use the Text Diff Tool

Follow these simple steps to compare text differences and analyze changes

Step-by-Step Instructions

Paste your original text in the left "Text A" input area

Paste the modified text in the right "Text B" input area

Choose comparison mode: side-by-side, unified, or character-level

View highlighted differences with additions in green and deletions in red

Export the diff report or copy specific changes

Pro Tips

🔍

Use side-by-side view for easier visual comparison of documents

📝

Character-level diff shows precise changes within words

🗜

Ignore whitespace option helps focus on content changes

📋

Perfect for comparing code versions, document revisions, and text editing

💾

Save diff reports for documentation or change tracking

Frequently Asked Questions

How accurate is the diff algorithm?

Our algorithm uses the Longest Common Subsequence (LCS) method, providing accurate line-by-line comparisons similar to professional version control systems like Git.

What file formats are supported?

All text-based formats are supported: code files (.js, .py, .html, .css), documents (.txt, .md), data files (.json, .xml, .csv), and configuration files.